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/*******************************************************************************
* Copyright (c) 2005, 2006 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.osgi.baseadaptor.bundlefile;
import java.io.File;
import java.io.IOException;
import java.util.Enumeration;
/**
* A NestedDirBundleFile uses another BundleFile as its source but
* accesses all of its resources relative to a nested directory within
* the other BundleFile object. This is used to support zipped bundles
* that use a Bundle-ClassPath with an nested directory specified.
* <p>
* For Example:
* <pre>
* Bundle-ClassPath: nested.jar,nesteddir/
* </pre>
* @since 3.2
*/
public class NestedDirBundleFile extends BundleFile {
BundleFile baseBundleFile;
String cp;
/**
* Constructs a NestedDirBundleFile
* @param baseBundlefile the base bundle file
* @param cp
*/
public NestedDirBundleFile(BundleFile baseBundlefile, String cp) {
super(baseBundlefile.basefile);
this.baseBundleFile = baseBundlefile;
this.cp = cp;
if (cp.charAt(cp.length() - 1) != '/') {
this.cp = this.cp + '/';
}
}
public void close() {
// do nothing.
}
public BundleEntry getEntry(String path) {
if (path.length() > 0 && path.charAt(0) == '/')
path = path.substring(1);
String newpath = new StringBuffer(cp).append(path).toString();
return baseBundleFile.getEntry(newpath);
}
public boolean containsDir(String dir) {
if (dir == null)
return false;
if (dir.length() > 0 && dir.charAt(0) == '/')
dir = dir.substring(1);
String newdir = new StringBuffer(cp).append(dir).toString();
return baseBundleFile.containsDir(newdir);
}
public Enumeration getEntryPaths(String path) {
// getEntryPaths is only valid if this is a root bundle file.
return null;
}
public File getFile(String entry, boolean nativeCode) {
// getFile is only valid if this is a root bundle file.
return null;
}
public void open() throws IOException {
// do nothing
}
}
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